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Impedance Audiometry의 實驗的 硏究 Experimental Study with Impedance Audiometry

대한이비인후-두경부외과학회지 1976년 19권 4호 p.7 ~ 13
금홍기, 閔陽基,
소속 상세정보
금홍기 (  ) 
서울대학교 의과대학 이비인후과학교실

閔陽基 (  ) 
서울대학교 醫科大學 耳鼻咽喉科學敎室

Abstract


Since clinical study of impedance measurement in 1946, many studies have been made. The impedance measurement is valuable especially in the application of impedance measurement in the assessment of ear disorders in children and the objective assessment of middle ear disorders. But we have not made a complete explanation in the motility of eardrum, the air cushion of middle ear cavity and the status of ossicular chain yet.
Now the authors studied experimentally with dog´s ears how the mass of eardrum itself affects´ on the impedance change.
The results are as follows;
1. The tympanogram and the static compliance in dogs ears are almost similar to those of men.
2. The type of tympanogram is not transformed by the increase of eardrum thickness itself.
3. The maximum compliance is increased by 0.54cc per one cellophane patch (2.2cc per the doubling of eardrum thickness) and the static compliance is decreased by.0.07 cc per one cellophane patch(0.28cc per the doubling of eardrum thickness).
4. We conclude that the above results are considerably valuable in the clinical diagnosis of the eardrum disorder itself.

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